Ruby environment variables
The Ruby interpreter uses the following environment variables to control its behavior. The ENV object contains a list of all currently set environment variables.
| Variable | Description |
|---|---|
| ##DLN_LIBRARY_PATH | Dynamic loading The path to search for modules.|
| HOME | The directory to move to when no arguments are passed to Dir::chdir. Also used with File::expand_path to expand "~".|
| LOGDIR | The directory to move to when no arguments are passed to Dir::chdir and the environment variable HOME is not set.|
| PATH | The search path for executing child processes, and the search path for Ruby programs when the -S option is specified. Separate each path with a colon (semicolon in DOS and Windows).|
| RUBYLIB | Search path for the library. Separate each path with a colon (semicolon in DOS and Windows).|
| RUBYLIB_PREFIX | is used to modify the RUBYLIB search path by replacing the library prefix path1 with path2 using the format path1;path2 or path1path2.|
| RUBYOPT | Command line options passed to the Ruby interpreter. Ignored in taint mode (where $SAFE is greater than 0).|
| RUBYPATH | The search path for Ruby programs after specifying the -S option. Priority is higher than PATH. Ignored in taint mode (where $SAFE is greater than 0).|
| RUBYSHELL | Specify the shell to use when executing the command. If this environment variable is not set, SHELL or COMSPEC is used.
env command to see a list of all environment variables.
HOSTNAME=ip-72-167-112-17.ip.secureserver.net RUBYPATH=/usr/bin SHELL=/bin/bash TERM=xterm HISTSIZE=1000 SSH_CLIENT=122.169.131.179 1742 22 SSH_TTY=/dev/pts/1 USER=amrood JRE_HOME=/usr/java/jdk/jre J2RE_HOME=/usr/java/jdk/jre PATH=/usr/local/bin:/bin:/usr/bin:/home/guest/bin MAIL=/var/spool/mail/guest PWD=/home/amrood INPUTRC=/etc/inputrc JAVA_HOME=/usr/java/jdk LANG=C HOME=/root SHLVL=2 JDK_HOME=/usr/java/jdk LOGDIR=/usr/log/ruby LOGNAME=amrood SSH_CONNECTION=122.169.131.179 1742 72.167.112.17 22 LESSOPEN=|/usr/bin/lesspipe.sh %s RUBYLIB=/usr/lib/ruby G_BROKEN_FILENAMES=1 _=/bin/env
